Thanks for your question. I will try to help.
Although there is technically nothing preventing her from attempting to visit the UK, I would think unwise to try for the time being.
The reason for this is because she has recently applied for a visa which would enable her to stay in the UK permanently. Effectively, she has demonstrated her desire that she wishes to stay permanently in the UK. For this reason, the home office and entry officials will consider her a higher risk of an overstay.
This means that they are much more likely to refuse her entry when she arrives and it would obviously be quite costly for you. For this reason I would personally suspend visits until you have deal with the appeal process.
I would also strongly recommend that you instruct a solicitor to advise you on whether your appeal has reasonable prospect of success on appeal.
This is because you can generally only rely on evidence which was in existence at the time that you made the original application and if your appeal fails because some of your evidence is inadmissible then you would have wasted a lot of time in appealing whereas making a new application would have been quicker.
I am sorry that I could not have better news for you.
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